Mechanical movement.



No. 767,085. PATENTED AUG. 9, 1904. W. RICHARDSON.

MECHANICAL MOVEMENT.

APlLIGATIOH FILED SEPT. 22, 1903.

N0 MODEL.

UNITED STATEs Patented August 9, 1904.

PATENT OFFICE.

WARREN RICHARDSON, OF SOMERVILLE, MASSACHUSETTS, ASSIGNOR OF ONE-FOURTH TO C. WALITER TOLSTRUP, OF MAPLEWOOD, MALDEN,

MASSACHUSETTS.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 767,085, dated August 9, 1904.

Application filed September 22, 1903. Serial No. 174,227. (No model.)

To all whom it may concern.-

Be it known that LWARREN RICHARDSON, of Somerville, in the county of Middlesex and State of Massachusetts, have invented certain 5 new and useful Improvements in Mechanical Movements, of which the following is a specification.

This invention has for its object to provide means for advantageously imparting move- IO ment to propellers and other devices by handpower.

The invention consists in the improved mechanical movements, which I will now proceed to describe and claim.

I 5 Of the" accompanying drawings, forming a part of this specification, Figure 1 represents a side elevation of a mechanical movement embodying my invention applied to a propeller-shaft. Fig. 2 represents a top plan 2 view of the same. Fig. 3 represents a section on line 3 3 of Fig. 1. Fig. 41 represents a section on line 4 1 of Fig. 1.

The same numerals of reference indicate the same parts in all the figures.

5 In the drawings, 12 represents a fixed rack secured to a supporting-frame and preferably arranged horizontally.

13 represents a rack which is adapted to reciprocate endwise in a path parallel with 3 the rack 12, the said movable rack' 13 being movable in fixed guides attached to the supporting-frame. The rack 13 is here shown as formed on a cross-head 1 1, the edges of which are engaged with horizontal guides 15 15, fixed to the supporting-frame, the rack 13 and the cross-head 1 1 being adapted to reciprocate in said guides.

16 represents a pinion which is interposed between the racks 12 and 13 and is engaged 4 with said racks. To the pinion 16 is aflixed a handle or lever 17, which is preferably engaged with the pinion by means of a socket 18, affixed to one side of the pinion, the lever being inserted in said socket. l/V hen the lever 17 is moved in the direction indicated by the arrow thereon in Fig. 1, the pinion 16 is partially rotated and caused to roll along the lixed rack 12 and to impart endwise motion to the movable rack 13 and cross-head 1 1. WVhen the lever 17 is moved in the opposite direction, 5 O endwise movement is in like manner imparted to the rack 13 and cross-head 14 in the opposite direction. It will be seen, therefore, that by oscillating the lever 17 the movable rack and cross-head are reciprocated.

19 represents a rotary body, here shown as a sprocket-w11eel, the shaft of which is journaled in bearings on the supporting-frame. The reciprocating movements of the movable rack 13 are caused to rotate the rotary body or wheel 19 through a pitman 20, connected with the cross-head 14 and with the wheel, as indicated in Fig. l. A continuous rotary movement in one direction may thus be imparted to the wheel 19, and motion may be 5 communicated from said wheel to any desired mechanism through a sprocket-chain 21. I have here shown a propeller 9.2 as the object to be driven by the described mechanical move ment, said propeller being aliix'ed to the shaft 7 23 and connected by bevel-gears 2 1 25 with a shaft 26, to which is aflixed a sprocket-wheel 27, engaging the chain 21.

I have found that by the described mechanism I am enabled to apply hand-power ad vantageously to any light mechanism to be driven. A propeller of suitable size to propel a small boat maybe advantageously driven by the means described, and said means may be applied to the driving of various other ar- 30 ticles, such as circular saws, &c.

It will be seen that the fixed rack 12 and the pinion 16, affixed to the lever 17, constitute a means for moving the fulcrum of the lever progressively in a rectilinear direction 5 when the lever is swinging on said fulcrum, the latter being reciprocated by the oscillation of the lever. It will also be seen that the movable rack 13 and the pinion 16 constitute a means for augmenting the rectilinear move- 9 ments of the fulcrum, and thus increasing the amplitude of the endwisc movements of the rod or pitman 20, so that the length of the es cillating movements of the lever is reduced to the minimum, while its force is fully utilized. .95

1. A mechanical movement comprising a fixed rack, an opposed rack movable in a path the pinion, a body mounted to rotate on an axis substantially in the plane of reciprocations of the cross-head, and a direct pitman connection between the cross-head and said rotatable body.

In testimony whereof Iliave aflixed my signature in presence of tWo witnesses.

WVARREN RICHARDSON.

Witnesses:

(J. F. BROWN, A. D. HARRISON. 

